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Sep 23, 2013 · A: PyPy isn't 100% compatible with CPython because it isn't simulating CPython under the hood. Some programs may still depend on CPython's unique features that are absent in PyPy such as C bindings, C implementations of Python object&methods, or the incremental nature of CPython's garbage collector.
As far as I know, PyPy is not ideal because of its lack of package support, but Cython seems pretty neat. FYI these two things aren’t really comparable. PyPy is a runtime, basically an alternative to the “standard” python interpreter (aka cpython) most people would have installed by default.
PyPy is an alternative implementation of the python language. This is a relatively new one and it features Just in Time compilation for faster python code execution. RPython is the language (different from Python) used to implement the internals of PyPy.
PyPy is a fast and capable alternative to CPython. By running your script with it, you can get a major speed improvement without making a single change to your code. But it’s not a silver bullet.
PyPy is the easiest to use if your dependencies work on it. Cython is ... for the same cases as numba, but harder to make it work, and with a lot more speed-up bonus. Other options include writing native libraries using C, Rust (PyO3), Zig, and whatever else.
Sep 19, 2022 · Based on different benchmarks done by the PyPy team it seems that it is 4.7X faster than CPython (https://speed.pypy.org/). The crazy thing about it is that you don’t need to rewrite the...
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Sep 24, 2022 · PyPy [4] is an alternative to CPython. With PyPy, we write our programs in RPython [5], and apply the RPython translation toolchain that generates binary executable. One major advantage of PyPy over CPython is speed which will be demonstrated later in this article using the basic benchmarking tool.
